Removable radiating device for the cooling of spark plugs



Nov. 18, 1930. J. FRANQUET ETAL 1,782,250

REMOVABLE RAD IATING DEVICE FOR THE COOLING OF SPARK PLUGS FiIed June 10, 1929 2 Sheets-Sheet 1 Nov. 18, 1930. J. FRANQUET ET AL 1,732,260

. REMOVABLE RADIATING DEVICE FOR THE COOLING OF SPARK PLUGS Filed June 10, 1929 2 Sheets-Sheet 2 Patented Nov. 18, 1930 PATENT AOFFICE JnAntrn-anannr; or crrnritnoii-sonsnnennux, Ann mco As nzmoos, or rARIs, ,p i rnnivon. l I I nmvrovannnnnninrrne nnvronprcn THE ooomnc on seeing PLUGS 7 Application filed June 10, 1 929,; sen -inc. 369,801, main Luxemburg J unc s; 1928;

It has already been proposed to construct spark plugs of a special type comprising cooling flanges or wings, such flanges being provided at the time of manufacture and being formed in one therewith.

The present inventionrelates to a ra'diat ing device comprising flanges, which forms an independent arrangement adapted to be mounted or removed as desired. The removable radiating device may be made adjustable in order to fit upon any of the known spark plugs. The said radiating device consists essentially of a metallic ring which may be fitted around the socket of the spark plug .5 and secured in place, thus maintaining the cooling flanges 1n contact with the outer surface of the said socket whereby the said flanges, which increase the radiating surface of the socket, are situated-inradial 550 planes passing throughthe axis of the spark plug. In the accompanying drawing and by way of example: 7 Figs. 1 and flare, respectively an elevational and a plan view of the removable radiating device'according to the invention.

Fig.3 shows the same as applied to a spark plug. a

Figs. 4 and 5 are respectivelya plan and an elevational view'of a modification.

As indicatediin the preceding considerat tions, the, said invention concerns, as a manufactured product, a removable radiator which may be mounted on thesocket of the known spark plug. be adjustable, and it consists of a. metallic ring of variable length which may besecured to. the said socket. Upon the said ring are mounted radialcooling flanges or wings, and when the ring is placed inposition, the said flanges are situated inradial planes passing through the axis of the spark plug. 'The inner 3 edgesof the wings fit upon the socket, according to :its generatrices. [Said The said regulator may sure between the engine and the; lower .wings are in metallic contact with the socket prises'anannular element consisting of two partsland 2, hinged together at the ends by arivet 3-or by like means. The said. annular element may thusbe opened and closed at will, so that it'can be removed and re-.-

placed, and can also be adjusted in diameter.

" -The ot-her. ends of the two halves 1 and 2 cit-the annular element'may be joined byj-mny suitable connecting means, and in the pres ent example, these parts are: connected; together by. aspring 4- forming a ratchet de vice and pertaining to one of the-parts of the annular element. 'The outer end of the said spring 4: forms a pawl which cooperates 'withratchet teeth formed of the other part.

The said annular element forms a fiat ring, andis provided with the nietalli e, flangesfi, perpendicular to the plane of the said ring and situated in the radial direction with reference to' the axis which is perpendicular to the plane ofthe ring and passes through itscentre.

d/Vhen the said ring issplaced around the socket 7 of a spark ,pluglFig. 3) the said flangeswill fit uponthe said socket. The

upper part of the flanges 6 is preferablyrer cessedas .far as a certain point above the said ring, thus forming a shoulder incontact withthe hexagonalv part of the socket. The height of the flanges is such that their lower partswill be in contact with the .Cylinder headfof. the engine when the spark -plugis 'mo'untedin position.

The cooling device is thus held by pas V part of the hexagonal part of thesocket. i

The modification shown in. 'FigaAand 5 differs from what precedes, firstly by the special disposition of the cooling wings 6 relatively to thetwohalf-rings 1 and2 onawhi'ch they are'mounted, and second1y,by thefcombination, with these lat-tenet means: for directingthecurrent of air relatively to the For this purpose, the said flanges are so dis posed that, the flanges at the front p'artof the radiating or. cooling device (relatively to the current of airprod'uced by theftravel of the vehicle) willflbe parallel to this direction. The succeeding flanges are mo're or less in.-

V clined with reference to the direction of this A plane passingthroughthe axis of the'cool I '15 ing device and the spark plug. Therear part current of'air, according as they proceed along the half-rings 1-2 on which they are mounted. Their surfaces. are increased at the same time. In this manner, each flange will project laterally from the, preceding,

and thus the flanges Will take in apart of the current of cooling air and this air will flow along their surfaces. V 7

To facilitate this action, the flanges 6' do not extend upon thewhole length ofthe halfwings 1-2; the outer edges of the last flanges are approximately contained in a diametrical of the half-rin s 1-2 thus comprisesthe conducting conduits converging to the. exterior,

. which serve to withdraw the current of air adjacent the lugs 8, which hold the said halfand to thus circulate it around the radiating device.

radially disposed and others of said flanges on' opposite side of the radial flange being at different varying angles to the annular portion, and diverging chambers inrear of the flanges.

In testimony whereof we aflix our signatures. I FRANQUET, JEAN.

NICOLAS DZIACOS.

In theapparatus shown in Figures 3 and A i 4, the conduits 7 as well as theradiating wings 6 are cast in one with the respective half-rings 12. The conduits 7 have their outer walls suitably outlined; their ends open respectively at the rear of the last flange (which may comprise a recess for this purpose) and at the rear part of the radiator,

rings together.

At the front, the half-rings have a fork shape andhold betweenthem a pivoted assembling lug 9 which connects them together and' may comprise a cooling flange 6. The ring has a suitable outline, and the lower ends ofthe w1ngs'6 are obhque tothe plane of the said ring (Fig. 4).

The upper part of the flanges 6, above the plane of ring 12,as Well asthe wall of the rear conduits 7 are limited to a cylindrical surface Whose diameter exceeds that of the" central opening of said ring (Fig. This forms an offset 10 making contact with the the spark plug. a r 7 Obviously, the said flanges may. have any hexagonal part surroundingthe socket of V otherrdisposition relatively to the assembling collar, since the characteristic of the inven- I of vertically disposedspaced apart-flanges which extend above andbelow the band, and 1 means for securing the ends of thesections tion consists essentially in the construction of a removable air cooling device which may bedisposed around a spark plug. 1

. We claim:

V 1.. A radiator for spark-plugs comprising two sections hinged together, each section including a semicircular band having a series together." 2. radiator including a semicircular band withvertically v disposed spaced apart flanges on the side and y front portion, each band in rear'of the flanges for spark plugsf'comprising two sectlonshmged together, each section 

